화학공학소재연구정보센터

Journal of Power Sources

Journal of Power Sources, Vol.268 Entire volume, number list
ISSN: 0378-7753 (Print) 

In this Issue (123 articles)

1 - 6 Scattering resonance enhanced dye absorption of dye sensitized solar cells at optimized hollow structure size
Tsai MC, Lee JY, Chang YC, Yang MH, Chen TT, Chang IC, Lee PC, Chiu HT, Lee RK, Lee CY
7 - 13 Al-Ga coating mechanism and discharge-charge characteristics of Li-Mn-O cathode powders at-30-55 degrees C
Hung FY, Yang KY
14 - 18 A phosphorus-free anolyte to enhance coulombic efficiency of microbial fuel cells
Tang XH, Li HR, Du ZW, Ng HY
19 - 24 Hydrothermally growth of novel hierarchical structures titanium dioxide for high efficiency dye-sensitized solar cells
Cheng PF, Liu Y, Sun P, Du SS, Cai YX, Liu FM, Zheng J, Lu GY
25 - 36 Study on the chemical stability of catalyst counter electrodes for dye-sensitized solar cells using a simple X-ray photoelectron spectroscopy-based method
Yun DJ, Kim J, Chung J, Park S, Baek W, Kim Y, Kim S, Kwon YN, Chung J, Kyoung Y, Kim KH, Heo S
37 - 44 Improved electrolyte and its application in LiNi1/3Mn1/3Co1/3O2-Graphite full cells
Liu MH, Dai F, Ma ZR, Ruthkosky M, Yang L
45 - 49 Carbon nanotube/polypyrrole nanofibers core-shell composites decorated with titanium dioxide nanoparticles for supercapacitor electrodes
de Oliveira AHP, de Oliveira HP
50 - 55 Corrosion protection of aluminum bipolar plates with polyaniline coating containing carbon nanotubes in acidic medium inside the polymer electrolyte membrane fuel cell
Deyab MA
56 - 62 Platinum-free binary Fe-Co nanofiber alloy counter electrodes for dye-sensitized solar cells
Liu J, Tang QW, He BL
63 - 68 Effect of heat treatment of electrodes on direct borohydride-hydrogen peroxide fuel cell performance
Jang B, Oh TH, Kwon S
69 - 76 Oxygen evolution in Co-doped RuO2 and IrO2: Experimental and theoretical insights to diminish electrolysis overpotential
Gonzalez-Huerta RG, Ramos-Sanchez G, Balbuena PB
77 - 81 Performance improvement of gel- and solid-state dye-sensitized solar cells by utilization the blending effect of poly (vinylidene fluoride-co-hexafluropropylene) and poly (acrylonitrile-co-vinyl acetate) co-polymers
Venkatesan S, Obadja N, Chang TW, Chen LT, Lee YL
82 - 87 Lithium-sulfur batteries: Influence of C-rate, amount of electrolyte and sulfur loading on cycle performance
Bruckner J, Thieme S, Grossmann HT, Dorfler S, Althues H, Kaskel S
88 - 95 Steam reforming of methanol over copper loaded anodized aluminum oxide (AAO) prepared through electrodeposition
Reddy EL, Karuppiah J, Lee HC, Kim DH
96 - 105 Effects of Ni2+ doping on the performances of lithium iron pyrophosphate cathode material
Zheng JC, Ou X, Zhang B, Shen C, Zhang JF, Ming L, Han YD
106 - 112 Towards understanding the rate capability of layered transition metal oxides LiNiyMnyCo1-2yO2
Li Z, Ban C, Chernova NA, Wu Z, Upreti S, Dillon A, Whittingham MS
113 - 120 Synthesis and electrochemical performances of novel hierarchical flower-like nickel sulfide with tunable number of composed nanoplates
Yang JQ, Guo W, Li D, Wei CY, Fan HM, Wu LY, Zheng WJ
121 - 128 Description and performance of a novel aqueous all-copper redox flow battery
Sanz L, Lloyd D, Magdalena E, Palma J, Kontturi K
129 - 136 Investigation of PdIr/C electrocatalysts as anode on the performance of direct ammonia fuel cell
Assumpcao MHMT, da Silva SG, De Souza RFB, Buzzo GS, Spinace EV, Santos MC, Neto AO, Silva JCM
137 - 145 Unsymmetrical squaraine dye containing dithieno[3,2-b:2',3'-d] pyrrole as a pi-spacer: A potential photosensitizer for dye-sensitized solar cells
Yang LN, Sun ZZ, Li QS, Chen SL, Li ZS, Niehaus TA
146 - 152 Novel efficient synthesis of nanosized carbon coated LiMnPO4 composite for lithium ion batteries and its electrochemical performance
Duan JG, Cao YB, Jiang JB, Du K, Peng ZD, Hu GR
153 - 162 The formation and stability of the solid electrolyte interface on the graphite anode
Agubra VA, Fergus JW
163 - 170 Improved performance of quantum dot-sensitized solar cells adopting a highly efficient cobalt sulfide/nickel sulfide composite thin film counter electrode
Kim HJ, Kim SW, Gopi CVVM, Kim SK, Rao SS, Jeong MS
171 - 175 Phosphorus-doped carbon nanotubes supported low Pt loading catalyst for the oxygen reduction reaction in acidic fuel cells
Liu ZW, Shi QQ, Zhang RF, Wang QD, Kang GJ, Peng F
176 - 182 A new family of barium-doped Sr2Fe1.5Mo0.5O6-delta perovskites for application in intermediate temperature solid oxide fuel cells
Dai NN, Wang ZH, Jiang TZ, Feng J, Sun W, Qiao JS, Rooney D, Sun KN
183 - 193 Corrugated mesh flow channel and novel microporous layers for reducing flooding and resistance in gas diffusion layer-less polymer electrolyte fuel cells
Tanaka S, Shudo T
194 - 203 Experimental investigation of two-phase flow pressure drop transients in polymer electrolyte membrane fuel cell reactant channels and their impact on the cell performance
Banerjee R, Kandlikar SG
204 - 211 Facile synthesis of cobalt manganese oxides nanowires on nickel foam with superior electrochemical performance
Xu PP, Ye K, Cao DX, Huang JC, Liu T, Cheng K, Yin JL, Wang GL
212 - 224 Optimal control strategies for hydrogen production when coupling solid oxide electrolysers with intermittent renewable energies
Cai Q, Adjiman CS, Brandon NP
225 - 232 Pt-Sn/C catalysts prepared by sodium borohydride reduction for alcohol oxidation in fuel cells: Effect of the precursor addition order
Lopez-Suarez FE, Bueno-Lopez A, Eguiluz KIB, Salazar-Banda GR
233 - 239 Polypyrrole coated carbon nanotubes for supercapacitor devices with enhanced electrochemical performance
Zhu YL, Shi KY, Zhitomirsky I
240 - 245 Corrosion behavior of TiN, TiAlN, TiAlSiN-coated 316L stainless steel in simulated proton exchange membrane fuel cell environment
Nam ND, Vaka M, Hung NT
246 - 254 Development of MnO2 cathode inks for flexographically printed rechargeable zinc-based battery
Wang ZQ, Winslow R, Madan D, Wright PK, Evans JW, Keif M, Rong XY
255 - 260 Mesoporous Pt-Co oxygen reduction reaction (ORR) catalysts for low temperature proton exchange membrane fuel cell synthesized by alternating sputtering
Sievers G, Mueller S, Quade A, Steffen F, Jakubith S, Kruth A, Brueser V
261 - 268 Peak power prediction of a vanadium redox flow battery
Yu VK, Chen D
269 - 278 A novel iron (II) polyphthalocyanine catalyst assembled on graphene with significantly enhanced performance for oxygen reduction reaction in alkaline medium
Lin L, Li M, Jiang LQ, Li YF, Liu DJ, He XQ, Cui LL
279 - 286 Ab initio characterization of layered MoS2 as anode for sodium-ion batteries
Mortazavi M, Wang C, Deng JK, Shenoy VB, Medhekar NV
287 - 293 Simultaneous pH self-neutralization and bioelectricity generation in a dual bioelectrode microbial fuel cell under periodic reversion of polarity
Li WJ, Sun J, Hu YY, Zhang YP, Deng F, Chen J
294 - 300 The electrochemical and local structural analysis of the mesoporous Li4Ti5O12 anode
Kim S, Fang SH, Zhang ZX, Chen JZ, Yang L, Penner-Hahn JE, Deb A
301 - 314 Analysis of electric and thermal behaviour of lithium-ion cells in realistic driving cycles
Tourani A, White P, Ivey P
315 - 325 The impact of calendar aging on the thermal stability of a LiMn2O4-Li(Ni1/3Mn1/3Co1/3)O-2/graphite lithium-ion cell
Roder P, Stiaszny B, Ziegler JC, Baba N, Lagaly P, Wiemhofer HD
326 - 330 Vibration test methods and their experimental research on the performance of the lead-acid battery
He BX, Wang H, He X
331 - 340 A series of copper-free ternary oxide catalysts ZnAlCex used for hydrogen production via dimethyl ether steam reforming
Zhang LJ, Meng M, Wang XJ, Zhou S, Yang LJ, Zhang TY, Zheng LR, Zhang J, Hu TD
341 - 348 Hierarchical hollow urchin-like NiCo2O4 nanomaterial as electrocatalyst for oxygen evolution reaction in alkaline medium
Wang J, Qiu T, Chen X, Lu YL, Yang WS
349 - 355 Effects of inorganic salts on the morphological, structural, and electrochemical properties of prepared nickel-rich Li[Ni0.6Co0.2Mn0.2]O-2
Kim KJ, Jo YN, Lee WJ, Subburaj T, Prasanna K, Lee CW
356 - 364 Anode supported single chamber solid oxide fuel cells operating in exhaust gases of thermal engine
Briault P, Rieu M, Laucournet R, Morel B, Viricelle JP
365 - 371 Large and stable reversible lithium-ion storages from mesoporous SnO2 nanosheets with ultralong lifespan over 1000 cycles
Zhang X, Jiang B, Guo JX, Xie YP, Tang L
372 - 378 Graphene nanoscrolls encapsulated TiO2 (B) nanowires for lithium storage
Li XL, Zhang YL, Li TT, Zhong QN, Li HY, Huang JM
379 - 387 (LaSr)(x)MnO3 cathode stoichiometry effects on electrochemical performance in contact with AISI 441 steel interconnect
Lu K, Shen FY, Roberts R, Doucette G, McGuire M, Li WL
388 - 396 Synthesis of metal sulfide sensitized zinc oxide-based core/shell/shell nanorods and their photoelectrochemical properties
Han JH, Liu ZF, Yadian B, Huang YZ, Guo KY, Liu ZC, Wang B, Li YJ, Cui T
397 - 403 Facile kinetics of Li-ion intake causes superior rate capability in multiwalled carbon nanotube@TiO2 nanocomposite battery anodes
Acevedo-Pena P, Haro M, Rincon ME, Bisquert J, Garcia-Belmonte G
404 - 413 Effect of CO2 on the stability of strontium doped lanthanum manganite cathode
Hu BX, Mahapatra MK, Keane M, Zhang H, Singh P
414 - 422 A high performance layered transition metal oxide cathode material obtained by simultaneous aluminum and iron cationic substitution
El Mofid W, Ivanov S, Konkin A, Bund A
423 - 429 Enhancement of bacterial denitrification for nitrate removal in groundwater with electrical stimulation from microbial fuel cells
Zhang BG, Liu Y, Tong S, Zheng MS, Zhao YX, Tian CX, Liu HY, Feng CP
430 - 438 Oxidative precipitation of ruthenium oxide for supercapacitors: Enhanced capacitive performances by adding cetyltrimethylammonium bromide
Chen IL, Wei YC, Chen TY, Hu CC, Lin TL
439 - 442 Sinusoidal potential cycling operation of a direct ethanol fuel cell to improving carbon dioxide yields
Majidi P, Pickup PG
443 - 450 Coating TiVCr hydrogen storage alloy on the anode gas diffusion layer of proton exchange membrane fuel cells to improve performance
Fang SY, Huang RH, Teoh LG, Hsueh KL, Chao WK, Tsai DC, Yang TN, Shieu FS
451 - 458 Three-dimensional cross-linked carbon network wrapped with ordered polyaniline nanowires for high-performance pseudo-supercapacitors
Hu H, Liu SW, Hanif M, Chen SL, Hou HQ
459 - 468 Model based condition monitoring in lithium-ion batteries
Singh A, Izadian A, Anwar S
469 - 475 Electrocatalytic activities of alkyne-functionalized copper nanoparticles in oxygen reduction in alkaline media
Liu K, Song Y, Chen SW
476 - 481 Silver electrodeposition on the activated carbon air cathode for performance improvement in microbial fuel cells
Pu LT, Li KX, Chen ZH, Zhang P, Zhang X, Fu Z
482 - 490 A thermal-electrochemical model that gives spatial-dependent growth of solid electrolyte interphase in a Li-ion battery
Liu L, Park J, Lin XK, Sastry AM, Lu W
491 - 497 High rate LiMn2O4/carbon nanotube composite prepared by a two-step hydrothermal process
Zou BK, Ma XH, Tang ZF, Ding CX, Wen ZY, Chen CH
498 - 507 Evolution of the electrocatalytic activity of carbon-supported amorphous platinum-ruthenium-nickel-phosphorous nanoparticles for methanol oxidation
Ma YJ, Li H, Wang H, Mao XF, Linkov V, Ji S, Gcilitshana OU, Wang RF
508 - 516 Deactivation of nickel-based anode in solid oxide fuel cells operated on carbon-containing fuels
Xiao J, Xie YM, Liu J, Liu ML
517 - 521 Temperature dependence of the initial coulombic efficiency in Li-rich layered Li[Li0.144Ni0.136Co0.136Mn0.544]O-2 oxide for lithium-ions batteries
Qiu B, Wang J, Xia YG, Wei Z, Han SJ, Liu ZP
522 - 532 Synthesis and structure determination of potassium copper selenide nanowires and solid-state supercapacitor application
Zhang KY, Chen H, Wang X, Guo DL, Hu CG, Wang SX, Sun JL, Leng Q
533 - 545 Mathematical modeling and simulation of thermal management in polymer electrolyte membrane fuel cell stacks
Amirfazli A, Asghari S, Koosha M
546 - 549 Gasoline-fueled solid oxide fuel cell with high power density
Hou XX, Marin-Flores O, Kwon BW, Kim J, Norton MG, Ha S
550 - 556 Influence of M-B (M = Fe, Co, Ni) on aluminum-water reaction
Meng HX, Wang N, Dong YM, Jia ZL, Gao LJ, Chai YJ
557 - 564 Polypyrrole/poly(vinyl alcohol-co-ethylene) quasi-solid gel electrolyte for iodine-free dye-sensitized solar cells
Jung MH
565 - 574 The effects of moisture contamination in the Li-O-2 battery
Cho MH, Trottier J, Gagnon C, Hovington P, Clement D, Vijh A, Kim CS, Guerfi A, Black R, Nazar L, Zaghib K
575 - 583 Phase decomposition and electrochemical properties of single phase La1.6Mg0.4Ni7 alloy
Zhang L, Han SM, Han D, Li Y, Zhao X, Liu JJ
584 - 590 Micro-mesoporous carbon spheres derived from carrageenan as electrode material for supercapacitors
Fan Y, Yang X, Zhu B, Liu PF, Lu HT
591 - 595 A bioinspired approach to protectively decorate platinum-carbon for enhanced activity and durability in oxygen reduction
Huang YY, Fu F, Wu P, Wang YB, Yao JN
596 - 603 Mechanism and kinetics of sodium borohydride hydrolysis over crystalline nickel and nickel boride and amorphous nickel-boron nanoparticles
Wu ZJ, Mao XK, Zi Q, Zhang RR, Dou T, Yip ACK
604 - 609 Experimental and modeling study on charge storage/transfer mechanism of graphene-based supercapacitors
Ban S, Jing X, Zhou HJ, Zhang L, Zhang JJ
610 - 618 Embedding nano-silicon in graphene nanosheets by plasma assisted milling for high capacity anode materials in lithium ion batteries
Sun W, Hu RZ, Liu H, Zeng MQ, Yang LC, Wang HH, Zhu M
619 - 624 Improving efficiency of silicon heterojunction solar cells by surface texturing of silicon wafers using tetramethylammonium hydroxide
Wang LG, Wang FY, Zhang XD, Wang N, Jiang YJ, Hao QY, Zhao Y
625 - 633 Thermoelectrochemical simulations of performance and abuse in 50-Ah automotive cells
Kim SU, Albertus P, Cook D, Monroe CW, Christensen J
634 - 639 Electrochemical performance and stability of lanthanum strontium cobalt ferrite oxygen electrode with gadolinia doped ceria barrier layer for reversible solid oxide fuel cell
Fan H, Keane M, Singh P, Han MF
640 - 644 Empirical evaluation of the improvement of battery output when coupled with a capacitor bank
Cain SR, Anderson A, Tasillo E, Infantolino W, Wolfgramm P
645 - 657 Surface film formation on TiSnSb electrodes: Impact of electrolyte additives
Zhang W, Ghamouss F, Darwiche A, Monconduit L, Lemordant D, Dedryvere R, Martinez H
658 - 669 A comparative study of commercial lithium ion battery cycle life in electric vehicle: Capacity loss estimation
Han XB, Ouyang MG, Lu LG, Li JQ
670 - 676 Titanium dioxide quantum dots: Magic materials for high performance underlayers inserted into dye-sensitized solar cells
Que LF, Lan Z, Wu WX, Wu JH, Lin JM, Huang ML
677 - 682 Improved photo-stability of silicon nanobelt arrays by atomic layer deposition for efficient photocatalytic hydrogen evolution
Bao XQ, Liu LF
683 - 691 Surface structural conversion and electrochemical enhancement by heat treatment of chemical pre-delithiation processed lithium-rich layered cathode material
Han SJ, Qiu B, Wei Z, Xia YG, Liu ZP
692 - 699 Optimal selection of proton exchange membrane fuel cell condition monitoring thresholds
Boskoski P, Debenjak A
700 - 705 Template-free synthesis of vanadium oxides nanobelt arrays as high-rate cathode materials for lithium ion batteries
Qin ML, Liang Q, Pan AQ, Liang SQ, Zhang Q, Tang Y, Tan XP
706 - 711 Performance enhancement of direct ethanol fuel cell using Nafion composites with high volume fraction of titania
Matos BR, Isidoro RA, Santiago EI, Fonseca FC
712 - 717 Pt-coated Pd nanocubes as catalysts for alkaline oxygen reduction activity
Lee CL, Yang CC, Liu CR, Liu ZT, Ye JS
718 - 727 New latent heat storage system with nanoparticles for thermal management of electric vehicles
Javani N, Dincer I, Naterer GF
728 - 732 Preparation of reduced tantalum pentoxide by electrochemical technique for oxygen reduction reaction
Awaludin Z, Okajima T, Ohsaka T
733 - 743 Influence of membrane properties on the transient behavior of polymer electrolyte fuel cells
Verma A, Pitchumani R
744 - 751 One-pot synthesis of platinum(3)cobalt nanoflowers with enhanced oxygen reduction and methanol oxidation
Zheng JN, He LL, Chen C, Wang AJ, Ma KF, Feng JJ
752 - 757 Near net shape manufacturing of planar anode supported solid oxide fuel cells by using ceramic injection molding and screen printing
Kluczowski R, Krauz M, Kawalec M, Ouweltjes JP
758 - 764 Real-time estimation of lead-acid battery parameters: A dynamic data-driven approach
Li Y, Shen Z, Ray A, Rahn CD
765 - 770 Hydrogen generation by tin corrosion in lactic acid solution promoted by sodium perchlorate
Deyab MA
771 - 777 The characteristic of strontium-site deficient perovskites SrxFe1.5Mo0.5O6-delta (x=1.9-2.0) as intermediate-temperature solid oxide fuel cell cathodes
Yang GQ, Feng J, Sun W, Dai NN, Hou MY, Hao XM, Qiao JS, Sun KN
778 - 786 Significantly improved dehydrogenation of ball-milled MgH2 doped with CoFe2O4 nanoparticles
Shan JW, Li P, Wan Q, Zhai FQ, Zhang J, Li ZL, Liu ZJ, Volinsky AA, Qu XH
787 - 793 Aluminum oxide as a dual-functional modifier of Ni-based anodes of solid oxide fuel cells for operation on simulated biogas
Wang F, Wang W, Ran R, Tade MO, Shao ZP
794 - 803 Nd1.8Ce0.2CuO4+delta:Ce0.9Gd0.9Gd0.1O2-delta as a composite cathode for intermediate-temperature solid oxide fuel cells
Khandale AP, Bhoga SS
804 - 809 Chemical stability study of nanoscale thin film yttria-doped barium cerate electrolyte for micro solid oxide fuel cells
Li Y, Su PC, Wong LM, Wang SJ
810 - 815 Post-hoc comparisons among iron electrode formulations based on bismuth, bismuth sulphide, iron sulphide, and potassium sulphide under strong alkaline conditions
Posada JOG, Hall PJ
816 - 823 Degradation mechanism of LiCoO2/mesocarbon microbeads battery based on accelerated aging tests
Guan T, Zuo PJ, Sun S, Du CY, Zhang LL, Cui YZ, Yang LJ, Gao YZ, Yin GP, Wang FP
824 - 830 Preparation and characterization of carbon-supported PtOs electrocatalysts via polyol reduction method for methanol oxidation reaction
Li ZP, Li MW, Han MJ, Zeng JH, Li YX, Guo YQ, Liao SJ
831 - 840 Production of potassium manganate and barium manganate from spent zinc-MnO2 dry cells via fusion with potassium hydroxide
da Rocha RA, Quintanilha CL, Lanxin TV, Afonso JC, Vianna CA, Gante V, Mantovano JL
841 - 847 Strategies to optimize lithium-ion supercapacitors achieving high-performance: Cathode configurations, lithium loadings on anode, and types of separator
Cao WJ, Li YX, Fitch B, Shih J, Doung T, Zheng J
848 - 852 Influence of mechanical grinding on lithium insertion and extraction properties of iron silicide/silicon composites
Usui H, Nouno K, Takemoto Y, Nakada K, Ishii A, Sakaguchi H
853 - 860 Proton dynamics in sulfonated ionic salt composites: Alternative membrane materials for proton exchange membrane fuel cells
De Almeida NE, Goward GR
861 - 873 State-of-charge and state-of-health estimation for lithium-ion batteries based on dynamic impedance technique
Hung MH, Lin CH, Lee LC, Wang CM
874 - 881 Efficient electron/hole transport in inorganic/organic hybrid solar cells by lithium ion and molybdenum trioxide codoping
Jin X, Sun WF, Chen ZH, Li Y, Li PJ, He XD, Yuan YB, Zou SB, Qin YC, Li QH
882 - 886 High catalytic activity of anatase titanium dioxide for decomposition of electrolyte solution in lithium ion battery
Liu M, He YB, Lv W, Zhang C, Du HD, Li BH, Yang QH, Kang FY
887 - 894 Li distribution in graphite anodes: A Kelvin Probe Force Microscopy approach
Luchkin SY, Amanieu HY, Rosato D, Kholkin AL
895 - 903 Remaining capacity estimation of Li-ion batteries based on temperature sample entropy and particle filter
Li JF, Lyu C, Wang LX, Zhang LQ, Li CH
904 - 910 Chemical reaction mechanisms between Y2O3 stabilized ZrO2 and Gd doped CeO2 with PH3 in coal syngas
Chen G, Kishimoto H, Yamaji K, Kuramoto K, Gong MY, Liu XB, Hackett G, Gerdes K, Horita T
911 - 921 Model-based analysis of water management in alkaline direct methanol fuel cells
Weinzierl C, Krewer U
922 - 927 Improved photoelectric conversion efficiency from titanium oxide-coupled tin oxide nanoparticles formed in flame
Gu F, Huang WJ, Wang SF, Cheng X, Hu YJ, Li CZ
928 - 940 Algebraic method for parameter identification of circuit models for batteries under non-zero initial condition
Devarakonda L, Hu TS
941 - 949 An efficient photoanode consisting of TiO2 nanoparticle-filled TiO2 nanotube arrays for dye sensitized solar cells
Zhang J, Li QT, Li SQ, Wang Y, Ye C, Ruterana P, Wang H
950 - 959 Slurry-based chemical hydrogen storage systems for automotive fuel cell applications
Brooks KP, Semelsberger TA, Simmons KL, van Hassel B
960 - 964 Field assisted sintering of dense Al-substituted cubic phase Li7La3Zr2O12 solid electrolytes
Zhang YH, Chen F, Tu R, Shen Q, Zhang LM
965 - 976 Highly efficient light-harvesting boradiazaindacene sensitizers for dye-sensitized solar cells featuring phenothiazine donor antenna
Mao M, Zhang XL, Fang XQ, Wu GH, Dai SY, Song QH, Zhang XX